Headphone



FIG. 1 is a rear view of a headphone showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear, bottom, and right side perspective view thereof;

FIG. 4 is front, bottom, and right side perspective view thereof;

FIG. 5 is a cross-sectional view taken in the direction of line 5-5shown in FIG. 1; and,

FIG. 6 is a cross-sectional view taken in the direction of line 6-6shown in FIG. 2.

CLAIM The ornamental design for a headphone, as shown and described.